Selective carbon dioxide adsorption of ε-Keggin-type zincomolybdate-based purely inorganic 3D frameworks

Zhenxin Zhang; Masahiro Sadakane; Shin Ichiro Noro; Toru Murayama; Takashi Kamachi; Kazunari Yoshizawa; Wataru Ueda

doi:10.1039/c4ta05496b

Selective carbon dioxide adsorption of ε-Keggin-type zincomolybdate-based purely inorganic 3D frameworks

Zhenxin Zhang, Masahiro Sadakane, Shin Ichiro Noro, Toru Murayama, Takashi Kamachi, Kazunari Yoshizawa, Wataru Ueda

Department of Fundamental Organic Chemistry

Research output: Contribution to journal › Article › peer-review

34 Citations (Scopus)

Abstract

Polyoxometalate-based 3D frameworks, Na_1.5H_11.4[ZnMo₁₂O₄₀{Zn₂}]·5.5H₂O and (NH₄)_1.5H_8.5[ZnMo₁₂O₄₀{Zn₂}]·6H₂O, are synthesized in moderate yields. Rotation of the reactor under hydrothermal conditions is essential to improve the yield. The materials show zeolite-like selective molecule adsorption properties. Depending on the micropore aperture size of the materials, small molecules can be adsorbed in the materials, while large molecules cannot. The enthalpy of adsorption and DFT calculation indicate that the materials strongly interact with CO₂, but weakly interact with CH₄, due to electrostatic interactions between the materials and molecules. CO₂/CH₄ co-sorption experiments show that the materials can selectively adsorb CO₂, and CO₂ adsorption selectivity of the material with sodium cations is higher than that of the material with ammonium cations. The material with sodium ions can be utilized for gas chromatographic separation of CH₄ and CO₂. This journal is

Original language	English
Pages (from-to)	746-755
Number of pages	10
Journal	Journal of Materials Chemistry A
Volume	3
Issue number	2
DOIs	https://doi.org/10.1039/c4ta05496b
Publication status	Published - Jan 14 2015

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Chemistry(all)
Renewable Energy, Sustainability and the Environment
Materials Science(all)

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10.1039/c4ta05496b

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title = "Selective carbon dioxide adsorption of ε-Keggin-type zincomolybdate-based purely inorganic 3D frameworks",

abstract = "Polyoxometalate-based 3D frameworks, Na1.5H11.4[ZnMo12O40{Zn2}]·5.5H2O and (NH4)1.5H8.5[ZnMo12O40{Zn2}]·6H2O, are synthesized in moderate yields. Rotation of the reactor under hydrothermal conditions is essential to improve the yield. The materials show zeolite-like selective molecule adsorption properties. Depending on the micropore aperture size of the materials, small molecules can be adsorbed in the materials, while large molecules cannot. The enthalpy of adsorption and DFT calculation indicate that the materials strongly interact with CO2, but weakly interact with CH4, due to electrostatic interactions between the materials and molecules. CO2/CH4 co-sorption experiments show that the materials can selectively adsorb CO2, and CO2 adsorption selectivity of the material with sodium cations is higher than that of the material with ammonium cations. The material with sodium ions can be utilized for gas chromatographic separation of CH4 and CO2. This journal is",

author = "Zhenxin Zhang and Masahiro Sadakane and Noro, {Shin Ichiro} and Toru Murayama and Takashi Kamachi and Kazunari Yoshizawa and Wataru Ueda",

year = "2015",

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doi = "10.1039/c4ta05496b",

language = "English",

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journal = "Journal of Materials Chemistry A",

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T1 - Selective carbon dioxide adsorption of ε-Keggin-type zincomolybdate-based purely inorganic 3D frameworks

AU - Zhang, Zhenxin

AU - Sadakane, Masahiro

AU - Noro, Shin Ichiro

AU - Murayama, Toru

AU - Kamachi, Takashi

AU - Yoshizawa, Kazunari

AU - Ueda, Wataru

PY - 2015/1/14

Y1 - 2015/1/14

N2 - Polyoxometalate-based 3D frameworks, Na1.5H11.4[ZnMo12O40{Zn2}]·5.5H2O and (NH4)1.5H8.5[ZnMo12O40{Zn2}]·6H2O, are synthesized in moderate yields. Rotation of the reactor under hydrothermal conditions is essential to improve the yield. The materials show zeolite-like selective molecule adsorption properties. Depending on the micropore aperture size of the materials, small molecules can be adsorbed in the materials, while large molecules cannot. The enthalpy of adsorption and DFT calculation indicate that the materials strongly interact with CO2, but weakly interact with CH4, due to electrostatic interactions between the materials and molecules. CO2/CH4 co-sorption experiments show that the materials can selectively adsorb CO2, and CO2 adsorption selectivity of the material with sodium cations is higher than that of the material with ammonium cations. The material with sodium ions can be utilized for gas chromatographic separation of CH4 and CO2. This journal is

AB - Polyoxometalate-based 3D frameworks, Na1.5H11.4[ZnMo12O40{Zn2}]·5.5H2O and (NH4)1.5H8.5[ZnMo12O40{Zn2}]·6H2O, are synthesized in moderate yields. Rotation of the reactor under hydrothermal conditions is essential to improve the yield. The materials show zeolite-like selective molecule adsorption properties. Depending on the micropore aperture size of the materials, small molecules can be adsorbed in the materials, while large molecules cannot. The enthalpy of adsorption and DFT calculation indicate that the materials strongly interact with CO2, but weakly interact with CH4, due to electrostatic interactions between the materials and molecules. CO2/CH4 co-sorption experiments show that the materials can selectively adsorb CO2, and CO2 adsorption selectivity of the material with sodium cations is higher than that of the material with ammonium cations. The material with sodium ions can be utilized for gas chromatographic separation of CH4 and CO2. This journal is

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Selective carbon dioxide adsorption of ε-Keggin-type zincomolybdate-based purely inorganic 3D frameworks

Abstract

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